Improvement in paper-folding machines



A. ASE-iRN. Paper-Fncng achnes.

Patented August 12 PATENT OFFICE.

ALVAH WASHBURN, OF MEDINA, OHIO.

IMPROVEMENT IN PAPER-FOLDING MACHINES.

Specification forming part of Letters Patent No. 141,742, dated August12, 1873; application filed May 1, 1873.

To alt whom it may concern:

Be it known that I, ALyAH WASHEUEN, of Medina, in the county of Medinaand State of Ohio, have invented certain new and useful Improvements inPaper-Folding Machine, of

. ture of thc invention consists in the provision of a sliding orextensioncreasing-blade, applied, in the present instance, to thedelivery or main frame of the machine, and operating to crease the paperat the point where the hin ge of the second foldin g-fl y is located,thus obviating the formation of an imperfect crease at the end of thesheet, in machines heretofore constructed.

In the drawings, Figure 1 is a perspective view of the folding-frames ofa paper-folding machine with my invention applied thereto; Fig. 2, aside view of the same; and Fig. 3, a detached view of the slidiu gcreaser and stationary creasing-rib.

The construction of the folding frames or tlics and the mechanism foroperating the same diifers in no respect from my previous patent, exceptthat I have, in the present instance, shown a less number of frames butthis is not essential, as the number of frames may be varied so as tomake any number of folds desired, as from folio to the highest numberever used.

In order, however, to obtain a full understanding of the improvementsmade upon my former machine, reference is made to the drawing, in which-A represents the frame or table supporting the entire operatingmechanism, B, the primary or creasing frame, which receives the sheet ofpaper from the printing-press, and folds it onto the secondaryfoldingframe C, which turns at right angles to the frame B, and foldsthe paper upon the frame D, the latter frame discharging the paper in afolded state at the side or end of the machine.

Said frames are operated in a successive order by the mechanism, thesame as shown in my previous patent, and it is therefore not deemednecessary to show the same in the present instance.

In previous machines provided with folding-flies, the hinge E, uponwhich the secondary folding-frame turns, is located at the end of thechannel or groove F,'which operates in connection with the rib G on theprimary or delivery frame to form the crease or first fold in the sheeto-f paper; but such an arrange,- ment of parts possesses thedisadvantage of not perfectly creasing the sheet at the end contiguousto the hinge, as the creasing-rib, in order to clear said rib, is cutaway at that point. 1

To overcome these defects, I employ an eX- tensible or slidingcreasing-blade, H, which is formed so as to embrace the creasing-rib Gr,and connected through the medium of a link or rod, I, to a lever, J,having its fulcrum in a flanged plate applied to the under side of thefly B. Said lever is connected, through the medium of an arm, K, to arock-shaft, L, which is actuated in the manner shown in my previouspatent for operating the ily B. When the latter is turned onto the otherframes of the machine, the creasing-blade will, in its passa-ge over thehinge E, be moved to a sufticient extent on the rib G, so as not tointerfere with the hinge, and will then be forced backward so as tocrease the end of the sheet, as will be apparent. The arm K, connectingthe roclcshaft L to the frame B and to the sliding creasing-blade, ismade tapering or elastic, so that when the frame is folded upon thepaper it will spring or yield, thus dispensing with the separateconnecting springs shown in my previous patent.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

The sliding creasing -blade H, combined with the stationary creasing-riband folding ily or iiies of a paper-folding machine, as and for thepurpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this14th day of April, 1873.

ALVAE wAsEBUEN.

Witnesses:

C. F. SPENCER, E. W. GODDARD.

